Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-10-01 Thread gm
Am 01.10.2017 um 16:52 schrieb gm: So I tested a familiy of numbers based on a = ln(2) that should read g= ln(2); (a ~= 0.76597) It seems one of the best, but why? Counterintutively, there is no solution for g=a for N =2 (except g=a=1); (the solution for g=a and N=3 is 1/golden ratio )

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-10-01 Thread gm
Am 30.09.2017 um 22:44 schrieb Stefan Sullivan: Sometimes the simplest approach is the best approach. Sounds like a good reverb paper to me. Some user evaluation and references to standard papers and  That would be a paper on numerology then... I generalized a bit: Na - 1 = a*g a = 1 /

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-09-30 Thread Stefan Sullivan
Sometimes the simplest approach is the best approach. Sounds like a good reverb paper to me. Some user evaluation and references to standard papers and  On Sep 29, 2017 8:51 AM, "gm" wrote: > It's a totally naive laymans approach > I hope the formatting stays in place. >

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-09-29 Thread gm
Am 29.09.2017 um 17:50 schrieb gm: For instance you can make noise loops with randomizing all phases by FFT in circular convolution that sound very reverberated. to clarify: I ment noise loops from sample material, a kind of time strech, but with totally uncorrelated phases

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-09-29 Thread gm
It's a totally naive laymans approach I hope the formatting stays in place. The feedback delay in the loop folds the signal back so we have periods of a comb filter. |  |  |  | |__|__|__|___ Now we want to fill the period densly with impulses:

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-09-29 Thread gm
And, "The simplest digital reverberator is nothing more than a delay of 30 msec." Am 29.09.2017 um 13:16 schrieb STEFFAN DIEDRICHSEN: Maybe that’s because of Hal Chamberlin, who wrote in his book “Musical Applications of Microprocessors”, 2nd ed., p. 508: “Perhaps the simplest, yet most

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-09-29 Thread STEFFAN DIEDRICHSEN
Maybe that’s because of Hal Chamberlin, who wrote in his book “Musical Applications of Microprocessors”, 2nd ed., p. 508: “Perhaps the simplest, yet most effective, digital signal-processing function is the simulation of reverberation”. There you are. ;-) Best, Steffan > On

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-09-29 Thread gm
ay ratios or feedback ratios – maybe I didn’t look closed enough. *From:*music-dsp-boun...@music.columbia.edu [mailto:music-dsp-boun...@music.columbia.edu] *On Behalf Of *gm *Sent:* 28. september 2017 18:41 *To:* music-dsp@music.columbia.edu *Subject:* Re: [music-dsp] Reverb, magic numbers and random

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-09-29 Thread Martin Lind
: music-dsp-boun...@music.columbia.edu [mailto:music-dsp-boun...@music.columbia.edu] On Behalf Of gm Sent: 28. september 2017 18:41 To: music-dsp@music.columbia.edu Subject: Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach But this ratio scheme actually is the result

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-09-28 Thread gm
Now that I had to explain it I realize a few more things It has some interesting properties not just on the echo density but also on the phase delays (of course these are related somehow). the untuned pitches are [-12] -7.02. -15.86 -21.68 ... and -3.86, -9.68, -14.04 ...  and inverted

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-09-28 Thread gm
Am 28.09.2017 um 17:18 schrieb Martin Lind: To get a realistic (or a musical for matter) sounding reverb it will include thousands of listening tests with various test signals - I haven't seen any 'automated' or any particular strategy for tuning reverbs in the wild other than extensive

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-09-28 Thread Martin Lind
[mailto:music-dsp-boun...@music.columbia.edu] On Behalf Of gm Sent: 28. september 2017 16:47 To: music-dsp@music.columbia.edu Subject: Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach And here's how I've been doing it before the RNG approach, I present you: The Go

Re: [music-dsp] Reverb, magic numbers and random generators #2 the Go approach

2017-09-28 Thread STEFFAN DIEDRICHSEN
I think, this structure you mentioned (2 AP filter + delay and a feedback node) has been investigated by Bill Gardner. I used this structure, too, but it took 4 allpass filter to make it work. But still it has a repetitive sound, which goes away, if the feedback factor approaches 1.0. So, it’s